766936139 has 2 divisors, whose sum is σ = 766936140. Its totient is φ = 766936138.

The previous prime is 766936133. The next prime is 766936153. The reversal of 766936139 is 931639667.

It is a happy number.

766936139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766936139 - 2⁴ = 766936123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (766936133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383468069 + 383468070.

It is an arithmetic number, because the mean of its divisors is an integer number (383468070).

Almost surely, 2^766936139 is an apocalyptic number.

766936139 is a deficient number, since it is larger than the sum of its proper divisors (1).

766936139 is an equidigital number, since it uses as much as digits as its factorization.

766936139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 50.

The square root of 766936139 is about 27693.6118807208. The cubic root of 766936139 is about 915.3483455729.

The spelling of 766936139 in words is "seven hundred sixty-six million, nine hundred thirty-six thousand, one hundred thirty-nine".